Wet curtain maintenance and maintenance: ensures optimal ventilation and cooling
Return to ListHow wet curtains work
A wet curtain system is a device that uses the evaporation of water to cool down and purify the air. Specifically, it transmits water through a pump to the wet curtain, forming a uniform film of water. When hot air passes through this film of water, the water absorbs the heat in the air and evaporates, causing the air temperature to drop. In addition, the wet curtain can also capture and absorb harmful substances such as dust and bacteria in the air through water mist, and play the effect of purifying the air.
In the high temperature environment in summer, the wet curtain system is mainly used to reduce the temperature in the pig house, but also to increase the air humidity. There are two main types of wet curtain systems: one is a deep sink wet curtain, and the other is an aluminum alloy wet curtain.
▲Deep sink wet curtain
▲Aluminum alloy wet curtain
The cooling effect of the wet curtain is affected by a variety of factors, the most important of which are the temperature and humidity of the outside air, and the structural design of the wet curtain itself. In the environment of high temperature and low humidity, the cooling efficiency of wet curtain is higher. In addition, the 45°×45° Angle combination has a higher cooling efficiency than the 45°×15° Angle combination.
Matters needing attention
1. Wet curtain paper should be cleaned regularly, and the algae and dirt bred on the wet curtain paper should be cleaned in time.
2. When the wet curtain paper is damaged or the flash causes water droplets to splash, it should be repaired in time.
3. Regularly clean the filter on the circulating water pipe to ensure that it is smooth and effective. According to the wetting effect of the wet curtain, adjust the branch pipe distribution water valve, or clean the dirt in the pipe.
4. Remove the circulating pump (such as submersible pump or self-priming pump), and check and clean the impurities on the inlet filter screen and impeller of the pump.
5. Check the water level control valve regularly to ensure that it works reliably. For aluminum alloy wet curtain, the circulating pool should be cleaned and disinfected regularly to ensure the cleanliness and health of the circulating water of the wet curtain, and to prevent the growth of algae and the accumulation of dust and mud sand. For the deep sink wet curtain, the debris and garbage in the water tank (pool) should be cleaned regularly to avoid the suction of debris by the pump when using the wet curtain system, resulting in equipment damage.
6. Check the filter element in the circulating water supply system and clean up the garbage inside the filter element in time.
Care and maintenance
1, to clean the spray pipe, first need to open the wet curtain on both sides of the sewage ball valve. Then, take a rubber hose with an outer diameter of about 25 mm, insert one end of it into the spray pipe, and connect the other end to the tap. Turn on the faucet and rinse the spray pipe with water until the dirt is completely removed.
2, before starting the equipment, be sure to check and ensure that all valves in the system have been opened to prevent equipment damage due to improper operation. During use, the water source should be kept clean, ensuring that the pH value of the water is between 6 and 9, and the electrical conductivity is below 1000 microohms. As the water continues to evaporate and new water is added, the salts and minerals in the circulating water gradually accumulate. In order to reduce the formation of sediment and scale, it is recommended to open the blowdown valve every week (every 2-3 days in areas where the air humidity is less than 20%), discharge the circulating water, and inject fresh water. Under normal circumstances, the displacement should not be less than 20% of the remaining water after evaporation. In addition, in order to maintain good water quality and prevent algae or other microorganisms from breeding on the wet curtain surface, 3-5 PPM of chlorine or bromine can be added to the water for a short time. If continuous treatment is required, the concentration should be maintained at 1ppm.
3, avoid direct sunlight and keep dry: water curtain components in direct sunlight easy to breed algae and moss, so should avoid direct exposure to sunlight water curtain. After stopping the use of the water curtain, the shade curtain should be put down in time to protect the wet curtain.
4, regular disinfection: In order to ensure the hygiene and safety of the water curtain, you can regularly use disinfectants to disinfect the water curtain. Before disinfection, it is necessary to thoroughly clean and dry the water curtain, and then follow the instructions of the disinfectant.
Project case
With the advent of summer, the threat of high temperature to pig farming is increasing, and relying solely on ordinary ventilation systems to cool down can no longer meet the actual needs. As an energy-saving, efficient and environmentally friendly cooling method, wet curtain has been widely used in the field of aquaculture.
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